Mantis#296. Thank you kindly, Idb for a patch that resolves:

Estate/ Manager Owner Uses the Region/Estate Menu Region TAB, 
and uses "Teleport Home All Users..." (Action Button), the 
action will complete but no one will be teleported and all 
users still function in the region ok.

OpenSim/Framework/IClientAPI.cs

@@ -298,6 +298,7 @@ namespace OpenSim.Framework
     public delegate void EstateBlueBoxMessageRequest(IClientAPI remoteClient, UUID invoice, UUID senderID, UUID sessionID, string senderName, string message);
     public delegate void EstateDebugRegionRequest(IClientAPI remoteClient, UUID invoice, UUID senderID, bool scripted, bool collisionEvents, bool physics);
     public delegate void EstateTeleportOneUserHomeRequest(IClientAPI remoteClient, UUID invoice, UUID senderID, UUID prey);
+    public delegate void EstateTeleportAllUsersHomeRequest(IClientAPI remoteClient, UUID invoice, UUID senderID);
     public delegate void RegionHandleRequest(IClientAPI remoteClient, UUID regionID);
     public delegate void ParcelInfoRequest(IClientAPI remoteClient, UUID parcelID);
 
@@ -518,6 +519,7 @@ namespace OpenSim.Framework
         event EstateBlueBoxMessageRequest OnEstateBlueBoxMessageRequest;
         event EstateDebugRegionRequest OnEstateDebugRegionRequest;
         event EstateTeleportOneUserHomeRequest OnEstateTeleportOneUserHomeRequest;
+        event EstateTeleportAllUsersHomeRequest OnEstateTeleportAllUsersHomeRequest;
         event UUIDNameRequest OnUUIDGroupNameRequest;
 
         event RegionHandleRequest OnRegionHandleRequest;

OpenSim/Region/ClientStack/LindenUDP/LLClientView.cs

@@ -965,6 +965,7 @@ namespace OpenSim.Region.ClientStack.LindenUDP
         public event EstateBlueBoxMessageRequest OnEstateBlueBoxMessageRequest;
         public event EstateDebugRegionRequest OnEstateDebugRegionRequest;
         public event EstateTeleportOneUserHomeRequest OnEstateTeleportOneUserHomeRequest;
+        public event EstateTeleportAllUsersHomeRequest OnEstateTeleportAllUsersHomeRequest;
         public event RegionHandleRequest OnRegionHandleRequest;
         public event ParcelInfoRequest OnParcelInfoRequest;
         public event ScriptReset OnScriptReset;
@@ -5877,6 +5878,14 @@ namespace OpenSim.Region.ClientStack.LindenUDP
                                     OnEstateTeleportOneUserHomeRequest(this, invoice, SenderID, Prey);
                                 }
                                 break;
+                            case "teleporthomeallusers":
+                                if (((Scene)m_scene).ExternalChecks.ExternalChecksCanIssueEstateCommand(this.AgentId, false))
+                                {
+                                    UUID invoice = messagePacket.MethodData.Invoice;
+                                    UUID SenderID = messagePacket.AgentData.AgentID;
+                                    OnEstateTeleportAllUsersHomeRequest(this, invoice, SenderID);
+                                }
+                                break;
                             case "colliders":
                                 handlerLandStatRequest = OnLandStatRequest;
                                 if (handlerLandStatRequest != null)

OpenSim/Region/Environment/Modules/World/Estate/EstateManagementModule.cs

@@ -383,6 +383,28 @@ namespace OpenSim.Region.Environment.Modules.World.Estate
             }
         }
 
+        private void handleEstateTeleportAllUsersHomeRequest(IClientAPI remover_client, UUID invoice, UUID senderID)
+        {
+            // Get a fresh list that will not change as people get teleported away
+            List<ScenePresence> prescences = m_scene.GetScenePresences(); 
+            foreach (ScenePresence p in prescences)
+            {
+                if (p.UUID != senderID)
+                {
+                    // make sure they are still there, we could be working down a long list
+                    ScenePresence s = m_scene.GetScenePresence(p.UUID);
+                    if (s != null)
+                    {
+                        // Also make sure they are actually in the region
+                        if (!s.IsChildAgent)
+                        {
+                            m_scene.TeleportClientHome(s.UUID, s.ControllingClient);
+                        }
+                    }
+                }
+            }
+        }
+
         private void HandleRegionInfoRequest(IClientAPI remote_client)
         {
 
@@ -723,6 +745,7 @@ namespace OpenSim.Region.Environment.Modules.World.Estate
             client.OnEstateBlueBoxMessageRequest += SendEstateBlueBoxMessage;
             client.OnEstateDebugRegionRequest += handleEstateDebugRegionRequest;
             client.OnEstateTeleportOneUserHomeRequest += handleEstateTeleportOneUserHomeRequest;
+            client.OnEstateTeleportAllUsersHomeRequest += handleEstateTeleportAllUsersHomeRequest;
 
             client.OnRegionInfoRequest += HandleRegionInfoRequest;
             client.OnEstateCovenantRequest += HandleEstateCovenantRequest;

OpenSim/Region/Environment/Modules/World/NPC/NPCAvatar.cs

@@ -305,6 +305,7 @@ namespace OpenSim.Region.Environment.Modules.World.NPC
         public event EstateBlueBoxMessageRequest OnEstateBlueBoxMessageRequest;
         public event EstateDebugRegionRequest OnEstateDebugRegionRequest;
         public event EstateTeleportOneUserHomeRequest OnEstateTeleportOneUserHomeRequest;
+        public event EstateTeleportAllUsersHomeRequest OnEstateTeleportAllUsersHomeRequest;
         public event EstateChangeInfo OnEstateChangeInfo;
         public event ScriptReset OnScriptReset;
         public event GetScriptRunning OnGetScriptRunning;

OpenSim/Region/Examples/SimpleModule/MyNpcCharacter.cs

@@ -201,6 +201,7 @@ namespace OpenSim.Region.Examples.SimpleModule
         public event EstateBlueBoxMessageRequest OnEstateBlueBoxMessageRequest;
         public event EstateDebugRegionRequest OnEstateDebugRegionRequest;
         public event EstateTeleportOneUserHomeRequest OnEstateTeleportOneUserHomeRequest;
+        public event EstateTeleportAllUsersHomeRequest OnEstateTeleportAllUsersHomeRequest;
         public event ScriptReset OnScriptReset;
         public event GetScriptRunning OnGetScriptRunning;
         public event SetScriptRunning OnSetScriptRunning;